Design and simulation analysis of solid organic fertilizer applicator equipped with fertilizer loading and spreading device based on EDEM
Currently,the process of solid organic fertilizer loading and spreading mainly relies on manual labor,which has such problems as low mechanization,high labor intensity,poor efficiency and uneven fertilization,greatly limiting the develop-ment of agricultural machinery facilities.Especially,as for organic fertilizer loading and spreading in the vegetable industry chain,the time period of fertilizer application is short,while fertilizer loading and transporting call for much time.In this article,in order to improve efficiency,efforts are made to design an integrated fertilizer device of loading,transporting and spreading,based on the solid organic fertilizer applicator;the discrete-element method is used to simulate and analyze the loading,transpor-ting and spreading process.In addition,a 3D model is set up with the help of the SolidWorks software;then,it is imported into the EDEM software for simulation.In order to obtain the fertilizer loading and spreading device's optimal scattering parameters,the uniformity of fertilizer spreading is taken as the response;the device's movement speed,spiral scattering speed,and number of spiral blades are taken as the factors.The Design-Expert software is used to design the tests.According to the results obtained from the Box-Behnken test,a second-order regression model is set up and optimized between the response value and various fac-tors.It is found that the optimal combination of different parameters is as follows:the device's movement speed of 0.2 m/s,the spiral scattering speed of 202 r/min,and a total of 4 spiral blades.This study provides reference for structure design and optimi-zation of solid organic fertilizer applicators.
agricultural machinery facilityloading and spreading devicediscrete-element simulationtest designparame-ter optimization
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